phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '990b59a7c9fd925e1858cf3fca2b5e44' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('990b59a7c9fd925e1858cf3fca2b5e44', -1, 1766138571, 1766138571, 'd849d819', 13, 0, 0)

Line : 187
File : sessions.php